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Preliminary Studies of Molybdenum in Illinois Soils
Author(s) -
Haley L. E.,
Melsted S. W.
Publication year - 1957
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1957.03615995002100030017x
Subject(s) - molybdenum , ammonium oxalate , chemistry , oxalate , sodium hydroxide , ammonium hydroxide , reagent , ammonium , soil water , extraction (chemistry) , nuclear chemistry , inorganic chemistry , chromatography , geology , organic chemistry , soil science
Various methods of extracting molybdenum from soils have been examined and results compared with the total soil molybdenum and plant composition. The reagents employed for extracting molybdenum were 0.1 N NaOH, 0.275 M oxalate, 0.1 N HCl + 0.03 N NH 4 F, and 0.03 N NH 4 F. Total molybdenum was determined by a modification of the method of Grigg and Perrin. Plant analyses were made by the method of Johnson and Arkley. Total molybdenum in the soils studied ranged from 1.90 ppm. to 3.20 ppm. whereas the plant samples ranged from 0.27 ppm. to 10.65 ppm. molybdenum. The following sequence of extraction of molybdenum was observed: 0.1 N NaOH > Tamm's acid ammonium oxalate > 0.03 N NH 4 F > 0.1 N HCl + 0.03 N NH 4 F. The only forms of soil molybdenum that gave statistically significant correlations with plant composition were the forms extracted by sodium hydroxide and acid ammonium oxalate.